Compare 63/80 and 21/40
63/80 is greater than 21/40
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 40 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 80 × 1 = 80,
63/80 = 63 × 1/80 × 1 = 63/80 - Likewise, for the 2nd fraction, since 40 × 2 = 80,
21/40 = 21 × 2/40 × 2 = 42/80 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 63/80 > 42/80 or 63/80 > 21/40
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Related: 63/80 and 42/40 63/80 and 21/80 63/80 and 63/40